Rectal Neoplasms

• University of Alabama at Birmingham Comprehensive Cancer Center — Birmingham, Alabama, United States
• Comprehensive Cancer Institute of Huntsville — Huntsville, Alabama, United States
• Huntsville Hospital System — Huntsville, Alabama, United States
• MBCCOP - Gulf Coast — Mobile, Alabama, United States

• Yale Cancer Center — New Haven, Connecticut, United States

• Legacy Mount Hood Medical Center — Gresham, Oregon, United States
• Legacy Good Samaritan Medical Center — Portland, Oregon, United States
• Legacy Meridian Park Medical Center — Tualatin, Oregon, United States

• Sahlgrenska University Hospital — Gothenburg, Sweden

Not specified

• University of California, Los Angeles — Los Angeles, California, United States
• University of Colorado Cancer Center — Aurora, Colorado, United States
• The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins — Baltimore, Maryland, United States
• Dana-Farber/Harvard Cancer Center — Boston, Massachusetts, United States

• Montefiore Medical Center - Weiler Campus — The Bronx, New York, United States
• Montefiore Medical Center - Moses Campus — The Bronx, New York, United States

• Sahlgrenska University Hospital — Gothenburg, Sweden

• Robert H. Lurie Comprehensive Cancer Center — Chicago, Illinois, United States

• National Institut of Oncology, Surgical oncology department — Rabat, Morocco